take the arccosine of a number in javascript

To take the arccosine of a number in JavaScript, you can use the Math.acos() function. This function accepts a number as its argument, and returns the arccosine (in radians) of that number.

Here's an example usage:

index.tsx
const x = 0.5;
const arccosine = Math.acos(x);
console.log(arccosine); // Output: 1.0471975511965979 (which is approximately 60 degrees in radians)
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Note that the Math.acos() function returns the result in radians, so you may need to convert it to degrees if necessary. You can do this by multiplying the result by 180/Math.PI, like this:

index.tsx
const degrees = arccosine * 180/Math.PI;
console.log(degrees); // Output: 60 (which is the equivalent of the above output, but in degrees)
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